Find out arithmetical mean and standard deviation from this table :
70
60
50
40
Marks obtained
30
20
7
18
Number of students
40
40
63
65
(Ans. SD = 14-02, CSD = 0-39, X = 35-88 )
Answers
Answered by
0
Answer:
arithmetic mean = Sum by count
so
now add the the numbers and divide it by the count now you should do it
Similar questions
Math,
3 hours ago
English,
3 hours ago
Science,
3 hours ago
Social Sciences,
5 hours ago
Social Sciences,
5 hours ago
Physics,
7 months ago
English,
7 months ago